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Techno Ryowa Ltd. is a Japan-based company specializing in the design, construction, maintenance, and research of environmental control systems, primarily focused on air conditioning, plumbing, and sanitary equipment technologies. It operates in the construction and engineering sector, providing comprehensive solutions for industrial and general building applications. The Equipment Construction segment handles the design and construction of air conditioning, sanitary, and electrical equipment works, along with the sale of cooling and heating systems. Techno Ryowa Ltd. offers advanced industrial equipment such as clean systems, temperature and humidity control systems, energy conservation equipment, spot air conditioning, industrial wastewater and air treatment facilities, refrigeration systems, clean effluent processing plants, and nuclear power-related equipment. For general buildings, it supplies air conditioning, plumbing, disaster prevention and fire extinguishing systems, wastewater treatment, district cooling and heating products, and co-generation systems. The company also provides equipment maintenance services, including diagnosis, overhaul, and efficiency improvements through a nationwide network of specialized technicians. Founded in 1949 and headquartered in Tokyo, Japan, Techno Ryowa Ltd. serves diverse sectors including factories, office buildings, pharmaceutical and food facilities, clean rooms for semiconductors, and high-security laboratories, promoting environmentally friendly spaces via air and water technologies.